Ticket #49614: 49614.2.diff

src/wp-admin/includes/media.php

@@ -3722 +3722 @@
                 } else {
                         $result = $wpdb->query( "UPDATE $wpdb->posts SET post_parent = 0 WHERE post_type = 'attachment' AND ID IN ( $ids_string )" );
                 }
+        }
 
+        if ( isset( $result ) ) {
                 foreach ( $ids as $att_id ) {
+                        /**
+                         * Fires when media is attached/detached from a post.
+                         *
+                         * @since 5.5
+                         *
+                         * @param string $action    Attach/detach action.
+                         * @param int    $att_id    The attachment ID.
+                         * @param int    $parent_id Attachment parent ID.
+                         */
+                        do_action( 'wp_media_attach_action', $action, $att_id, $parent_id );
+
                         clean_attachment_cache( $att_id );
                 }
-        }
 
-        if ( isset( $result ) ) {
                 $location = 'upload.php';
                 $referer  = wp_get_referer();